บท 683: Chapter 665: Making a Comeback_1

Su Pan'er was so parched from speaking, her cheeks ached from constant movement.

In the end, she informed the little soldier, "Actually, there are many considerations when collecting willow charcoal. The ideal time is around Qingming, when the willow buds are just about to sprout and all the nutrients are concentrated in the twigs. At this time, it's best if they are cut down for use. Unfortunately, we will have to wait until next year."

At this point, she couldn't help but sigh.

The little soldier was quite optimistic: "Ma'am, don't worry. Now that we know the method, why worry about being unable to make good gunpowder in the future? Once our brothers produce fireworks and firecrackers from these materials, won't money start rolling in?"

Fireworks and firecrackers?

Su Pan'er hadn't really thought about this.

She couldn't help but feel a little amused. If the little soldier in front of her knew her inner thoughts, I'm afraid...